3D finite element modelling of multilateral junction wellbore stability

Abstract Wellbore failure can occur at different stages of operations. For example, wellbore collapse might happen during drilling and/or during production. The drilling process results in the removal of an already stressed rock material. If the induced stresses near the wellbore exceed the strength...

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Autores principales:	Assef Mohamad-Hussein, Juliane Heiland
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2018
Materias:	Multilateral junction Numerical modelling Stability Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/300309f98d70497abd16cb7216aec91a
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spelling	oai:doaj.org-article:300309f98d70497abd16cb7216aec91a2021-12-02T08:35:42Z3D finite element modelling of multilateral junction wellbore stability10.1007/s12182-018-0251-01672-51071995-8226https://doaj.org/article/300309f98d70497abd16cb7216aec91a2018-07-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-018-0251-0https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Wellbore failure can occur at different stages of operations. For example, wellbore collapse might happen during drilling and/or during production. The drilling process results in the removal of an already stressed rock material. If the induced stresses near the wellbore exceed the strength of rock, wellbore failure occurs. The production process also changes the effective stresses around the wellbore. Such changes in stresses can be significant for high drawdown pressures and can trigger wellbore failure. In this paper, the Mohr–Coulomb failure criterion with a hyperbolic hardening is used. The model parameters are identified from triaxial compression tests. The numerical simulations of laboratory tests showed that the model can reproduce the mechanical behaviour of sandstone. In addition, the simulations of multilateral junction stability experiments showed that the model was able to reproduce yielding and failure at the multilateral junction for different levels of applied stresses. Finally, a numerical example examining multilateral junction stability in an open borehole during drilling and production is presented. The results illustrate the development of a localized failure zone proximate to the area where two wellbore tracks join, particularly on the side with a sharp approaching angle, which would significantly increase the risk of wellbore collapse at the junction.Assef Mohamad-HusseinJuliane HeilandKeAi Communications Co., Ltd.articleMultilateral junctionNumerical modellingStabilityScienceQPetrologyQE420-499ENPetroleum Science, Vol 15, Iss 4, Pp 801-814 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Multilateral junction Numerical modelling Stability Science Q Petrology QE420-499
spellingShingle	Multilateral junction Numerical modelling Stability Science Q Petrology QE420-499 Assef Mohamad-Hussein Juliane Heiland 3D finite element modelling of multilateral junction wellbore stability
description	Abstract Wellbore failure can occur at different stages of operations. For example, wellbore collapse might happen during drilling and/or during production. The drilling process results in the removal of an already stressed rock material. If the induced stresses near the wellbore exceed the strength of rock, wellbore failure occurs. The production process also changes the effective stresses around the wellbore. Such changes in stresses can be significant for high drawdown pressures and can trigger wellbore failure. In this paper, the Mohr–Coulomb failure criterion with a hyperbolic hardening is used. The model parameters are identified from triaxial compression tests. The numerical simulations of laboratory tests showed that the model can reproduce the mechanical behaviour of sandstone. In addition, the simulations of multilateral junction stability experiments showed that the model was able to reproduce yielding and failure at the multilateral junction for different levels of applied stresses. Finally, a numerical example examining multilateral junction stability in an open borehole during drilling and production is presented. The results illustrate the development of a localized failure zone proximate to the area where two wellbore tracks join, particularly on the side with a sharp approaching angle, which would significantly increase the risk of wellbore collapse at the junction.
format	article
author	Assef Mohamad-Hussein Juliane Heiland
author_facet	Assef Mohamad-Hussein Juliane Heiland
author_sort	Assef Mohamad-Hussein
title	3D finite element modelling of multilateral junction wellbore stability
title_short	3D finite element modelling of multilateral junction wellbore stability
title_full	3D finite element modelling of multilateral junction wellbore stability
title_fullStr	3D finite element modelling of multilateral junction wellbore stability
title_full_unstemmed	3D finite element modelling of multilateral junction wellbore stability
title_sort	3d finite element modelling of multilateral junction wellbore stability
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/300309f98d70497abd16cb7216aec91a
work_keys_str_mv	AT assefmohamadhussein 3dfiniteelementmodellingofmultilateraljunctionwellborestability AT julianeheiland 3dfiniteelementmodellingofmultilateraljunctionwellborestability
_version_	1718398449122017280

3D finite element modelling of multilateral junction wellbore stability

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